10-苯基葵酸 、 (S)-3-amino-4-dimethylamino-butyric acid benzyl ester dihydrochloride 以to produce (S)-4-dimethylamino-3-(10-phenyl-decanoylamino)-butyric acid benzyl ester, which的产率得到(S)-4-dimethylamino-3-(10-phenyl-decanoylamino)-butyric acid benzyl ester